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en>Douglas W. Jones
→Geometry: try for the right place to discuss extruded holes. This may belong elsewhere.
 
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{{Refimprove|date=December 2009}}
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In [[atmospheric dynamics]] and physical [[oceanography]], the '''Rossby radius of deformation''' is the length scale at which rotational effects become as important as [[buoyancy]] or [[gravity wave]] effects in the evolution of the [[Fluid dynamics|flow]] about some disturbance.<ref>Gill, A. E., 1982: Atmosphere-Ocean Dynamics, Academic Press, Orlando, 662 pp.</ref>
 
For a [[barotropic]] [[ocean]]:
: <math>L_R \equiv \frac{(gD)^{1/2}}{f_0}</math>, where <math>\,g</math> is the [[gravitational acceleration]], <math>\,D</math> is the water depth, and <math>\,f_{o}</math> is the [[Coriolis parameter]] at the reference [[latitude]].  
 
For ''f'' = 1&times;10<sup>−4</sup> s<sup>−1</sup> appropriate to 45&deg; latitude, and ''D'' = 4&nbsp;km, ''L<sub>R</sub>'' &asymp; 2000&nbsp;km; and for ''D'' = 40 m, ''L<sub>R</sub>'' &asymp; 200&nbsp;km.
 
The ''n''th [[baroclinic]] Rossby radius is:
: <math>L_{R, n} \equiv \frac{NH}{f_0}</math>, where <math>\,N</math> is the [[Brunt–Väisälä frequency]], <math>\,H</math> is the [[scale height]], and ''n'' = 1, 2, ....
 
The ratio ''N''/''f''<sub>0</sub> is typically of order 100, so the Rossby radius is about 100 times the vertical scale height, ''H''. For a vertical scale associated with the height of the [[tropopause]], ''L''<sub>''R'', 1</sub> &asymp; 1000&nbsp;km, which is the predominant scale seen on weather charts for [[cyclones]] and [[anticyclones]]. This is commonly called the [[synoptic scale meteorology|synoptic scale]].
 
The associated dimensionless parameter is the [[Rossby number]]. Both are named in honor of [[Carl-Gustav Rossby]].
 
==References==
{{Reflist}}
 
{{DEFAULTSORT:Rossby Radius Of Deformation}}
[[Category:Atmospheric dynamics]]
[[Category:Oceanography]]

Latest revision as of 23:23, 9 December 2014

Hello. Allow me introduce the writer. Her title is Refugia Shryock. I used to be unemployed but now I am a librarian and the wage has been truly fulfilling. Playing baseball is the pastime he will by no means stop doing. Puerto Rico is where he and his wife reside.

Feel free to surf to my web site; www.gaysphere.net